External battery



FIG. 1 is a front perspective view of an external battery showing ournew design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures depict environmental subject matter andform no part of the claimed design.

CLAIM We claim the ornamental design for an external battery, as shownand described.